Century Estate Wagon V6-181 3.0L (1984)
Torque Converter Clutch: All Technical Service Bulletins
TCC - Loss of Lock Up at Road Load Speeds
Bulletin 84-6E-26
Date
Oct. '84
Ref. No. 84-274-6E
SUBJECT:
LOSS OF TORQUE CONVERTER CLUTCH (TCC) AT ROAD SPEED
MODELS AFFECTED:
1984 CENTURYS EQUIPPED WITH 3.0L (VIN CODE E) ENGINES AND 1226519 ECM
Some 1984 3.0L Centurys may exhibit loss of Torque Converter Clutch at road load speeds. The cause for loss of Torque Converter Clutch (TCC) is
engine temperatures are cooling off to below 82~C (celsius) during cold weather operation. When temperatures go below 82~C (celsius) the PROM
program inhibits torque convertor clutch.
To correct, install a new service PROM part number 1226999 as per the 1984 Chassis Service Manual. This PROM lowers the minimum engine
temperature required for TCC operation. Scan ID 6999.
